 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Mci TRACON approach controller specifies 5 instances on his assigned shift of observed false split radar beacon targets west of mkc airport. He states that information being passed to him alleges false targets caused by WX anomaly.
| Attributes | |
| ACN | 410646 |
| Time | |
| Date | 199801 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : mkc |
| State Reference | MO |
| Altitude | msl bound lower : 4000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : mci tower : las |
| Operator | general aviation : personal |
| Make Model Name | Gulfstream Jet Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 12 |
| ASRS Report | 410646 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | controller : approach |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Gulfstream on vector to mkc, downtown airport, level at 4000 ft. Actual target 261 degrees, 17.69 mi off mkc VOR. False target appeared at 284 degrees, 17.56 mi off mkc. Occurring in great numbers in recent weeks. B727 being vectored for approach into mci, on downwind when false target appeared at 293 degrees at 17.5 mi from mkc VOR at 4500 ft. Appears that over 90 pct of the false targets are occurring west of mci airport. Get no explanation for false targets being generated, except that it could be WX related. B737 was being vectored to approach into mci on downwind at 5600 ft descending. A false target appeared at the 294 degree radial, 19 mi from mkc VOR. BE02 departed mci climbing to 14000 ft wbound. False target appeared at the 278 degree radial, 49 mi from mkc VOR at 14000 ft. BE02 departed mci, climbing to 8000 ft wbound. False target appeared at 070 degrees, 3 mi from mkc VOR at 8000 ft. False targets continue to occur at alarming rates, often in vicinity of actual aircraft.
Original NASA ASRS Text
Title: MCI TRACON APCH CTLR SPECIFIES 5 INSTANCES ON HIS ASSIGNED SHIFT OF OBSERVED FALSE SPLIT RADAR BEACON TARGETS W OF MKC ARPT. HE STATES THAT INFO BEING PASSED TO HIM ALLEGES FALSE TARGETS CAUSED BY WX ANOMALY.
Narrative: GULFSTREAM ON VECTOR TO MKC, DOWNTOWN ARPT, LEVEL AT 4000 FT. ACTUAL TARGET 261 DEGS, 17.69 MI OFF MKC VOR. FALSE TARGET APPEARED AT 284 DEGS, 17.56 MI OFF MKC. OCCURRING IN GREAT NUMBERS IN RECENT WKS. B727 BEING VECTORED FOR APCH INTO MCI, ON DOWNWIND WHEN FALSE TARGET APPEARED AT 293 DEGS AT 17.5 MI FROM MKC VOR AT 4500 FT. APPEARS THAT OVER 90 PCT OF THE FALSE TARGETS ARE OCCURRING W OF MCI ARPT. GET NO EXPLANATION FOR FALSE TARGETS BEING GENERATED, EXCEPT THAT IT COULD BE WX RELATED. B737 WAS BEING VECTORED TO APCH INTO MCI ON DOWNWIND AT 5600 FT DSNDING. A FALSE TARGET APPEARED AT THE 294 DEG RADIAL, 19 MI FROM MKC VOR. BE02 DEPARTED MCI CLBING TO 14000 FT WBOUND. FALSE TARGET APPEARED AT THE 278 DEG RADIAL, 49 MI FROM MKC VOR AT 14000 FT. BE02 DEPARTED MCI, CLBING TO 8000 FT WBOUND. FALSE TARGET APPEARED AT 070 DEGS, 3 MI FROM MKC VOR AT 8000 FT. FALSE TARGETS CONTINUE TO OCCUR AT ALARMING RATES, OFTEN IN VICINITY OF ACTUAL ACFT.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.